Abstract: A solar energy conversion system may include a receiver with a first heat transfer fluid channel having at least two opposite sides. Each side may present an external surface facing in a direction opposite to that of the external surface of the other opposite side. Each side may be configured to contact a heat transfer fluid carried in the first heat transfer fluid channel. A heliostat field may be configured to direct solar energy to each of the at least two opposite sides during the course of a day such that a thermal stress tending to bend the channel remains below a specified level.

Abstract: An evaporative burner includes an evaporative medium for feeding fuel vapor into a combustion chamber, a first heating device, having at least one ignition heating element projecting with at least its heating region into the combustion chamber for igniting fuel vapor present in the combustion chamber, and a second heating device, with at least one evaporating heating element associated with the evaporative medium for affecting its evaporation characteristic.

Abstract: A wood burning barbecue grill construction 10 including a base member 20 optionally mounted on a support post 90 and dimensioned to receive an enlarged hollow cylindrical container member 30 and a support column 40 provided with a stop collar 41 that rotatably supports a first swivel collar element 52 fixedly secured to a grill member 50 having a barred grill portion 53 and a flat grill portion 54 and a warming plate 60 rotatably suspended above said grill member 50 via a second swivel collar element.